Takeaway: JetBlue launched a new unlimited pass in August for passengers who frequent their terminals, which allots them one free checked bag. But watch out after that — the charge for a second checked bag is $40 and jumps to $75 for every bag after that.

Extra legroom can cost you up to $129 on Virgin America.

Takeaway: Virgin’s fees are comparable to many other companies on the list. But avoid its tempting Main Cabin Select seats unless you’re willing to shell out up to $129 per segment for the six extra inches of legroom.

United Airlines’ fees could top $800 if you’re a heavy packer.

Takeaway: United charges a hefty $200 fee for bags that weigh in at more than 70 pounds. Make sure to leave your bowling balls at home –– or look into a company that will ship your luggage to your destination at a lower cost.

US Airways is one of the only airlines that charges for pillows and blankets.

Takeaway: If you’re flying American, don’t bring a third bag. The extra suitcase will cost you $150 in fees, and could cost another $100 for being overweight and $200 for being oversized. But the airline rolled out a new service in August that will ship luggage to your destination.